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Zuckerberg argues that Facebook provides something the larger web doesn’t — an undo button — which he feels is more important than data portability.

The example he offers is the Facebook news feed. As it stands if you publish something to your news feed and then decide that you want to limit who can see it by changing the privacy settings, that information is removed from your friend’s updates (assuming they no longer have the privileges necessary to access it). However, were the Facebook news feed offered as an RSS feed available outside Facebook (as we’ve often argued it should be), it would, because of the nature of RSS, no longer be retractable. Even if you changed the privacy settings and removed it from the feed, many RSS readers would already have cached or otherwise stored the post you’d like to retract.

Digg has joined the DataPortability Project, a group of websites cooperating to help you securely use your data however you want. Why? Because you own your data. It’s that simple. From the start, Digg has supported the idea that you own your own data.

Digg already supports many of the open standards that let you use your data on sites other than Digg, including RSS, OPML, and hCard. We use RDF to embed the Creative Commons public domain dedication into each page. Just this week, we added MicroID, a Microformat that lets you prove to other services that you own your Digg user profile. We’ll be adding more open standards, such as OpenID, APML, OAuth, and XFN, in the coming months.

As the web grows exponentially in scale and complexity, an issue that becomes increasingly pressing is data ownership. There has been a lot of noise lately about how Facebook Connect, Google Friend Connect, and even MySpace’s Data Availability.

The Data Portability Project is trying very, very hard to solve these serious issues. They’re seeking to unite the socio-rhetorico-legal precedent with the growing list of open technologies and specifications (OpenID, OAuth, RSS, OPML, MicroFormats, Creative Commons, to name a few) and make sure that these proprietary bits, bytes, friends, enemies, birthdays, activies, pictures, videos, lifestyles, etc. are made open to the content creators (read: YOU, not Mark Zuckerberg).

The YQL platform provides a single endpoint service that enables developers to query, filter and combine data across Yahoo! and beyond. YQL exposes a SQL-like SELECT syntax that that is both familiar to developers and expressive enough for getting the right data